[PATCH v2 03/10] gpio: raspberrypi-exp: Release firmware handle on unbind

[Nicolas Saenz Julienne <nsaenzjulienne@xxxxxxx>]

Upon unbinding the device make sure we release RPi's firmware interface.

Signed-off-by: Nicolas Saenz Julienne <nsaenzjulienne@xxxxxxx>
---
 drivers/gpio/gpio-raspberrypi-exp.c | 14 +++++++++++++-
 1 file changed, 13 insertions(+), 1 deletion(-)

diff --git a/drivers/gpio/gpio-raspberrypi-exp.c b/drivers/gpio/gpio-raspberrypi-exp.c
index bb100e0124e6..c008336e1131 100644
--- a/drivers/gpio/gpio-raspberrypi-exp.c
+++ b/drivers/gpio/gpio-raspberrypi-exp.c
@@ -231,8 +231,19 @@ static int rpi_exp_gpio_probe(struct platform_device *pdev)
 	rpi_gpio->gc.get = rpi_exp_gpio_get;
 	rpi_gpio->gc.set = rpi_exp_gpio_set;
 	rpi_gpio->gc.can_sleep = true;
+	platform_set_drvdata(pdev, rpi_gpio);
 
-	return devm_gpiochip_add_data(dev, &rpi_gpio->gc, rpi_gpio);
+	return gpiochip_add_data(&rpi_gpio->gc, rpi_gpio);
+}
+
+static int rpi_exp_gpio_remove(struct platform_device *pdev)
+{
+	struct rpi_exp_gpio *rpi_gpio = platform_get_drvdata(pdev);
+
+	gpiochip_remove(&rpi_gpio->gc);
+	rpi_firmware_put(rpi_gpio->fw);
+
+	return 0;
 }
 
 static const struct of_device_id rpi_exp_gpio_ids[] = {
@@ -247,6 +258,7 @@ static struct platform_driver rpi_exp_gpio_driver = {
 		.of_match_table	= of_match_ptr(rpi_exp_gpio_ids),
 	},
 	.probe	= rpi_exp_gpio_probe,
+	.remove = rpi_exp_gpio_remove,
 };
 module_platform_driver(rpi_exp_gpio_driver);
 
-- 
2.28.0